The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).
                
            Metrics
Affected Vendors & Products
Advisories
    | Source | ID | Title | 
|---|---|---|
  Debian DLA | 
                DLA-335-1 | ntp security update | 
  Debian DSA | 
                DSA-3388-1 | ntp security update | 
  Ubuntu USN | 
                USN-2783-1 | NTP vulnerabilities | 
Fixes
    Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
        History
                    No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-06T06:41:09.519Z
Reserved: 2015-07-01T00:00:00
Link: CVE-2015-5300
No data.
Status : Deferred
Published: 2017-07-21T14:29:00.927
Modified: 2025-04-20T01:37:25.860
Link: CVE-2015-5300
                        OpenCVE Enrichment
                    No data.
 Debian DLA
 Debian DSA
 Ubuntu USN